Dixon, what i'd suggest for you to do is first of all join the NZKA, then obtain some mop spawners to start off with, and practice breeding them, raising fry, and all the other things we need to know how to do, then get some species of peat spawners (the more common, easier to breed ones) and get used to breeding them, storing eggs at the correct temp for the correct time period, hatching the eggs then raising the fry, and once you have done that heaps with the easier species you may well be lucky enough to get some of the rarer species.
At this stage, the chances of a non-NZKA person getting nigs is about nil unfortunately.